Originally Posted by DeltaOne
Wouldn't the Mini have to be on the same TiVo account to join the other network?
Yes, the security issue is that when you bridge your home network into the coax line with the standard setup, anyone with a MOCA adapter could be on your network if they coax connections are close to each other especially in an apartment situation. It is the same situation as running your wireless without a password and the Moca poe filter blocks the physical outside access and also acts as a reflector which can in some cases improve your own internal dwelling Moca network performance.
The general steps for using the poe adapter in setting up a new Moca network is to install the gateway and adapter(s), make sure they work then install the poe filter and reconfirm that everything continues to work.
It's not the Tivo security that is the issue, it's the possibility of open access to your home network with the ability for someone to have open access to other devices like your PC and any other device on your home network. . Now if you want there is additional security in the Moca adapter gateway were you can enable encryption were each Moca adapter must have matching encryption keys but they don't default to that configuration unless for example, you use the Actiontec configuration utility (required you to hook up a PC directly to the adapter and switch the config switch on the adapter).
Kind of side story but I know a grocery store in my area that has a fancy color laser printer on there internal store network were while they had a secured wireless password to access it, they missed the fact that by default, the printer also broadcasted it's services separately on a second open wifi network of it's own which no one noticed when they set it up intially. I got called in one afternoon (I'm a data networking troubleshooting contractor) when someone with a notebook or tablet simply attached to the printer's open wifi and started to print a few hundred of thousands "adult" pictures which embarrassed them not to mention used up a couple hundred dollars worth of laser color toner before they turned it off! One must be careful in this connected networked age!